public class example1_1 {
  public static void main (String args[]) {
    System.out.println("大家好！");
    System.out.println("Nice to meet you");
    Student stu = new Student();
    stu.speak("We are students");
  }
}
class Student {
  public void speak(String s) {
    System.out.println(s);
  }
}


